Hammer



FIG. 1 is a top plan view of a hammer showing my new design;

FIG. 2 is a side elevational view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a front elevational view thereof;

FIG. 6 is a side elevational view thereof;

FIG. 7 is an isometric view from one side thereof; and,

FIG. 8 is an isometric view from the other side thereof. 

The ornamental design for a hammer, as shown and described. 